fix: initialize hash_file variable before try block in handshake.py

Prevents potential NameError if tempfile creation fails in
hcxpcapngtool_handshakes() exception handler.

https://claude.ai/code/session_01AR5k1ToyGf5WcdRMqiQvcT

Author: claude

wifite/model/handshake.py

@@ -151,6 +151,7 @@ def hcxpcapngtool_handshakes(self):
         import tempfile
 
         # Create a temporary hash file to test if hcxpcapngtool can extract data
+        hash_file = None
         try:
             with tempfile.NamedTemporaryFile(mode='w', suffix='.22000', delete=False) as tmp:
                 hash_file = tmp.name